All on povray3.7 on Ubuntu 14.04 with linux3.13 (except where noted)
If you want to provide results, install povray on your machine and run these commands:
povray --benchmark
grep model /proc/cpuinfo | tail -1 && uname -a && lsb_release -a
Then, copy the terminal output of all of those commands, and paste it here.
Also, find me on #ubuntu-hr on irc.freenode.net, nickname is Mmike. Point me to your paste, and I'll update the list.
Intel Xeon E5-2690v4 [jelly] 2.6G 2x14core (56HT) 00m28s 1454.656 CPU-secs (Debian 4.1.7-1+grml.1)
Intel Xeon E5-2690V3 [jelly] 2.6G 2x12core (48hT) 00m34s 1518.808 CPU-secs (Debian 4.1.7-1+grml.1)
Intel Xeon E5-2683V3 [Mmike] 2.0G 2x14core (56HT) 00m34s 1751.776 CPU-secs
AMD Ryzen Threadripper 1950X [lathiat] 2.2G 16core (noHT) 00m34s 1053.103 CPU-secs (Linux 4.8, Ubuntu 16.04)
Intel Xeon E5-2697V2 [oburt] 2.7G 2x12core (48HT) 00m35s 1546.941 CPU-secs (Linux 3.10, CentOS 7)
IBM POWER8 (PowerNV 8247-22L) [Mmike] 2.0G 160 units (??) 00m40s 4726,437 CPU-secs (Linux 4.4.0 ppc64le)
Intel Xeon E5-2630V3 [rut] 2.4G 2x8core (16) 0m56s 1726.732 CPU-secs (FreeBSD13)
AMD Ryzen 7 1700X [lathiat] 3.4G 8core (16) 01m08s 1077.051 CPU-secs (Linux 4.4, Ubuntu 16.04)
Intel Xeon E5-2650 [Mmike] 2.3G 10core (20HT) 01m27s 1679.554 CPU-secs
AMD Ryzen 5 1600 [CrazyLemon] 3.2G 6core (12) 01m32s 1092.154 CPU-secs (Linux 4.10, Ubuntu 17.04)
Intel i7 6700KJ [darek] 4.0G 4core (8HT) 02m01s 968.098 CPU-secs (Linux 4.8.0, Ubuntu 17.04)
Intel i7 7700 [obrut] 3.6G 4core (8HT) 02m09s 1023,958 CPU-secs (Linux 4.8, UbuntuMate 16.10)
Intel i7 4790K [Mmike] 4.0G 4core (8HT) 02m11s 1006.096 CPU-secs
AMD FX(tm)-8350 [freyes] 4.0G 8core (noHT) 02m36s 1243.384 CPU-secs (Linux 4.4.0, Ubuntu 16.04)
Intel i7 6770HQ (NUC6i7KYK) [allixsenos] 2.6G 4core (8HT) 02m40s 1263.680 CPU-secs (Linux 4.4.0, Ubuntu 16.04)
Intel i7 4770K [hbogner] 3.5G 4core (8HT) 02m41s 1284.491 CPU-secs (Linux 3.19)
AMD FX(tm)-8350 [jsosic] 4.0G 8core (noHT) 02m42s 1259,949 CPU-secs (Linux 3.10, CentOS 7.2)
AMD FX(tm)-8350 [vileni] 4.0G 8core (noHT) 02m49s 1279.204 CPU-secs (Linux 3.16)
Intel Xeon E5-2620 [Mmike] 2.0G 6core (12HT) 03m07s 2227.640 CPU-secs
Intel i7 4750HQ [dodobas] 2.0G 4core (8HT) 03m09s 1503.206 CPU-secs (arch, Linux4.2)
Intel i5 3470 [hbogner] 3.2G 4core (noHT) 03m45s 897.468 CPU-secs
Intel i5 3470 [vileni] 3.2G 4core (noHT) 03m49s 900.142 CPU-secs
Intel Xeon E5405 [hbogner] 2.0G 2x4core (noHT) 03m51s 1830.462 CPU-secs
Intel i5 3470 [BotoSmoto] 3.2G 4core (noHT) 04m04s 881.499 CPU-secs (Ubuntu 15.10, Linux4.2)
Intel i7 2670QM [Mmike] 2.2G 4core (8HT) 04m12s 2010.155 CPU-secs
Intel Pentium G4560 [obrut] 3.5G 2core (4HT) 04m42s 1130.619 CPU-secs (Ubuntu 16.10, Linux4.8)
AMD A6-3650 [CrazyLemon] 2.6G 4core (noHT) 05m59s 1426.711 CPU-secs (Ubuntu 14.04, Linux3.19)
Intel i7 7560U [darek] 2.4G 2core (4HT) 06m03s 1446.446 CPU-secs (Ubuntu 17.04, Linux4.10)
Intel Atom C2750 [darek] 2.4G 8core (noHT) 06m30s 3099.148 CPU-secs (Ubuntu 16.04, Linux4.4)
Intel Xeon 5140 [hbogner] 2.3G 2x2core (noHT) 06m45s 1618.631 CPU-secs (Ubuntu 14.04, Linux 3.16)
Intel Atom C2758 [vileni] 2.4G 8core (noHT) 06m54s 3290.792 CPU-secs
Intel i5 4200M [rut] 2.5G 2core (4HT) 06m55s 1503.776 CPU-secs (FreeBSD12)
Intel i7 2640M [Mmike] 2.8G 2core (4HT) 07m19s 1755.484 CPU-secs
Intel i5 2520M [Mmike] 2.5G 2core (4TH) 07m34s 1814.931 CPU-secs
AMD AthlonII X4 600e [Mmike] 2.2G 4core (noHT) 07m38s 1770.935 CPU-secs
Intel i3 6006U [Mmike] 2.0G 2core (4HT) 08m02s 1920.342 CPU-secs (Ubuntu 17.04, Linux 4.10)
Intel i5 M560 [nix] 2.67G 2core (4HT) 09m14s 2216.368 CPU-secs (Ubuntu 14.04, Linux3.16)
AMD Athlon 5350 [vileni] 2.05G 4core (noHT) 10m00s 2399.695 CPU-secs (Linux 3.16)
AMD Athlon 5350 [SilverSpace] 2.05G 4core (noHT) 11m12s 2617.197 CPU-secs (Ubuntu 15.10, Linux4,2)
Intel Core2Duo T7100 [Mmike] 1.8G 2core (noHT) 17m35s 2094.762 CPU-secs
Intel Core2Duo T7500 [hbogner] 2.2G 2core (noHT) 19m14s 2290.190 CPU-secs
ARM PJ4Bv7 (scaleway) [Mmike] 4core (noHT) 39m04s 9364.480 CPU-secs (Linux3.2/armv7l)
ARMv6 ARM1176JZF-S Rpi B+ [SilverSpace] 0.8G 1core (noHT) 493m19s 29135.286 CPU-secs (Linux4.1/armv6l)